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DENVER -- Downsloping winds gusted to near 100 mph in the mountains and foothills on Wednesday morning, and will continue throughout the day.

High winds will blow across the Continental Divide from Loveland and Arapahoe Basin ski areas, through Berthoud Pass and north through the Indian Peaks and Rocky Mountain National Park.

High-profile vehicles were not allowed in both directions of Interstate 70 between Morrison and Copper Mountain.

A semitruck overturned in the westbound lanes near Georgetown because of the winds. The driver was reported to be OK.

"I just heard this big boom. It happened out of nowhere," said Kelly Robinson with Dillon Trucking and Towing. "The driver, when we got to his windshield, he was still sideways in the truck, seat-belted in."

Robinson was busy uprighting another semitruck that had blown over just a few feet away. That truck was parked when it toppled onto its side. The driver and a passenger were in the back of the truck.

"Yeah, they were sleeping. They were just sitting there sleeping, because they were out of hours," Robinson said.

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Travel will also be impacted on U.S. 40 over Berthoud Pass and the Peak to Peak Highway.